PL Gold Mine Restart Update

Minnova Corp. (TSXV: MCI) (OTC Pink: AGRDF) ("Minnova" or the "Company"), an advanced development-stage gold company focused on the restart and the expansion of our 100% owned PL Gold Mine in central Manitoba, is pleased to provide an update on the planned restart of the PL Gold Mine.

The 2026 Mineral Resource Estimate (2026 MRE) was prepared by A&B Global Mining ("ABGM") under the supervision of Nicholas Ross King, BSc (Hons) Geology, GDE (Mining Engineering), Pr.Sci Nat., an independent consultant to the company and a Qualified Person as defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101"). Unless otherwise stated, all currencies reported in this press release are in United States dollars.

2026 Mineral Resource Estimate for the PL Gold Mine

The 2026 Mineral Resource Estimate defines 601,158 Measured & Indicated gold ounces at 4.98 g/t, including 268,091 open-pit ounces at 5.28 g/t and 202,810 Inferred gold ounces at 3.78 g/t. Additional drilling offers significant resource-growth potential. The 2026 MRE uses a US$3,000/oz gold price; cut-off grades, costs, recoveries, dilution, and mining-loss assumptions are detailed in the Table 1 notes.

With one of Canada's highest-grade Measured and Indicated gold resources, the PL Gold Mine is positioned for restart at 1,000 tpd, expanding to 2,000 tpd in year two. The high-grade open-pit resource materially improves restart economics. At 1,000 tpd, Minnova expects initial annual production of approximately 45,000 ounces, increasing to approximately 90,000 ounces after the planned 2,000 tpd plant expansion until the pit is depleted.

Highlights of the PL Gold Mine Project Resource

Open Pit (OP) Grade: 5.28 g/t gold

Measured & Indicated Resources: 268,091 gold ounces (1,578,110 tonnes @ 5.28 g/t)

Inferred Resources: 21,955 gold ounces (118,689 tonnes @ 5.75 g/t)

Underground (UG) Grade: 4.75 g/t gold

Measured & Indicated Resources: 333,066 gold ounces (2,178,916 tonnes @ 4.75 g/t)

Inferred Resources: 180,855 gold ounces (1,548,443 tonnes @ 3.63 g/t)

Total Resource

Measured & Indicated Resources: 601,158 gold ounces (3,757,026 tonnes @ 4.98 g/t)

Inferred Resources: 202,810 gold ounces (1,667,132 tonnes @ 3.78 g/t)

Table 1. PL Gold Deposit Mineral Resource Estimate as of September 11, 2026

Category Tonnes Au Grade (g/t) Contained Au (oz)

PL Deposit – Open Pit: Cut-Off Grade 0.60 g/t

Measured 1,288,360 5.35 221,575

Indicated 289,750 4.99 46,516

Measured & Indicated 1,578,110 5.28 268,091

Inferred 118,689 5.75 21,955

PL Deposit – Underground: Cut-Off Grade 1.92 g/t and 1.43 g/t

Measured 1,343,678 5.06 218,603

Indicated 835,239 4.26 114,464

Measured & Indicated 2,178,916 4.75 333,066

Inferred 1,548,443 3.63 180,855

PL Deposit – Open Pit and Underground: Cut-Off Grade 0.06 g/t, 1.92 g/t and 1.43 g/t

Measured 2,632,038 5.20 440,178

Indicated 1,124,989 4.45 160,980

Measured & Indicated 3,757,026 4.98 601,158

Inferred 1,667,132 3.78 202,810

Notes: Mineral Resources are reported in accordance with the 2014 CIM Definition Standards . Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. Open-pit Mineral Resources: A cut-off grade of 0.60 g/t Au was applied to the Mineral Resource. The cut-off grade was based on mining costs of US$6.70/t for ore and US$5.48/t for waste, processing costs of US$29.25/t, G&A costs of US$12.60/t, metallurgical recovery of 90%, and a gold price of US$3,000/oz. An open-pit optimization study was undertaken to establish the ultimate open-pit limits and demonstrate Reasonable Prospects for Eventual Economic Extraction (RPEEE). Minin...